补充碳水化合物并不能提高高强度抗阻运动的表现。

Supplemental carbohydrate ingestion does not improve performance of high-intensity resistance exercise.

作者信息

Kulik Justin R, Touchberry Chad D, Kawamori Naoki, Blumert Peter A, Crum Aaron J, Haff G Gregory

机构信息

Human Performance Laboratory, Midwestern State University, Wichita Falls, Texas, USA.

出版信息

J Strength Cond Res. 2008 Jul;22(4):1101-7. doi: 10.1519/JSC.0b013e31816d679b.

DOI:10.1519/JSC.0b013e31816d679b

PMID:18545201

Abstract

The effects of supplemental carbohydrate (CHO) ingestion on the performance of squats to exhaustion (STE) were investigated with eight resistance-trained men. Subjects participated in a randomized, counterbalanced, double-blind, placebo-controlled protocol with testing separated by 7 days. Subjects consumed 0.3g.kgCHO.bodymass or a placebo (PLC) of equal volume immediately before exercise and after every other successful set of squats. The STE consisted of sets of five repetitions at an intensity of 85% 1 repetition maximum (1RM). Performance measured as total sets (CHO 3.5 +/- 3.2, PLC 3.5 +/- 2.7), repetitions (CHO 20.4 +/-14.9, PLC 19.7 +/- 13.1), volume load (CHO 2928.7 +/- 2219.5 kg, PLC 2772.8 +/- 1951.4 kg), and total work (CHO 29.9 +/- 22.3 kJ, PLC 28.6 +/- 19.5 kJ) was not statistically different between the CHO and PLC treatments. The results suggest that CHO supplementation does not enhance performance of squats performed with 85% 1RM to volitional failure.

摘要

对八名有阻力训练经验的男性进行了研究，以探讨补充碳水化合物（CHO）摄入对深蹲至力竭（STE）表现的影响。受试者参与了一项随机、平衡、双盲、安慰剂对照的实验方案，测试间隔7天。受试者在运动前以及每完成一组成功的深蹲后，立即摄入0.3g·kg体重的CHO或等体积的安慰剂（PLC）。STE包括以85%的1次最大重复量（1RM）强度进行每组5次重复的深蹲。在总组数（CHO组3.5±3.2，PLC组3.5±2.7）、重复次数（CHO组20.4±14.9，PLC组19.7±13.1）、体积负荷（CHO组2928.7±2219.5kg，PLC组2772.8±1951.4kg）和总功（CHO组29.9±22.3kJ，PLC组28.6±19.5kJ）方面，CHO组和PLC组之间的表现无统计学差异。结果表明，补充CHO并不能提高以85%的1RM强度进行深蹲直至自愿力竭的表现。